Seeking RTS experts to review delimited continuations MR

[Edward Kmett]

I'm super excited to see this, as it'll rather drastically improve the
performance I can get out of my fancy backtracking search algorithms.

-Edward

On Thu, Apr 14, 2022 at 8:33 PM Alexis King <lexi.lambda at gmail.com> wrote:

> Hi all,
>
> I have recently opened a draft MR with my initial implementation of
> first-class delimited continuations in the RTS, available here:
> https://gitlab.haskell.org/ghc/ghc/-/merge_requests/7942
>
> The MR is not entirely finished—it still requires docs and tests, which I
> am gradually working on. However, barring any bugs I discover after writing
> those tests, I believe the implementation itself is feature-complete with
> respect to the proposal. Given that it is a nontrivial patch to a somewhat
> unloved portion of GHC, and given that there are a couple questions I have
> about how best to go about testing certain interactions in the first place,
> I figured I would reach out and see if anyone particularly familiar with
> the guts of the RTS would be willing to volunteer some time to give it a
> careful look.
>
> The good news is that the patch is not actually very large, and it changes
> very little existing code: the diffstats currently sit at +1,078 -48. For
> those interested in taking a look at the patch, I recommend starting with
> the Notes mentioned in the MR description. I suspect they may be a bit
> sparse at the moment, so please do not hesitate to ask questions; I will do
> my best to respond promptly.
>
> Many thanks,
> Alexis
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